Adds ability to select team.

Closes #4 

@KrauseFx Please check if this matches your code standards (if not feel free to change anything or throw it out the window as you prefer :wink: 
Also maybe this could benefit from receiving the team as an option(?).

Right now I'm showing the list of teams so its easier for the user to select which one they want to manipulate.
See example below:
![screen_shot_2014-11-26_at_23_13_15](https://cloud.githubusercontent.com/assets/2642850/5212611/119f6788-75c2-11e4-8822-4123cc35b270.jpg)

*Edit: Forgot to mention; I modified the README although did not add a shoutout, don't know if you are used to that*

Oops. Sorry about that. Apple has two different team selection pages ; one with a select and the other with radio buttons. 

Spent some time trying with the select one because I didn't check that when accessing the profiles directly Apple shows the radio button and removed the 'has_content' as a desperate attempt and forgot to change it. 




Will do in a few and test that works as expected.

On Thu, Nov 27, 2014 at 4:45 AM, Felix Krause <notifications@github.com>
wrote:

>>          begin
>> -          all(".button.large.blue.signin-button").first.click
>> +          (wait_for_elements('#saveTeamSelection') rescue nil) # If the user is not on multiple teams
> It looks like you're looking for multiple teams in any case.
> Please include a check like ```page.has_content?"Select your Team"``` or something which only is displayed when being asked for the team.
> ---
> Reply to this email directly or view it on GitHub:
> https://github.com/KrauseFx/sigh/pull/7/files#r20989108